An innocent man was killed in a single knock-out punch after he said “excuse me” when he accidently bumped into someone on the street.

The man’s family is asking why it took police over four months to finally release the video, asking for help identifying the killer.

On June 26, 2016, Patrick Gorman, 64, was walking on a Queens, New York sidewalk around midnight. Another couple, appearing to be a white woman with an African American man, were walking along at the same time. Gorman reportedly accidentally bumped into the woman and said, “Excuse me.”

In the surveillance video finally released by the New York Police Department, the two men are seen coming around the corner, as the black man makes a dive for Gorman, socking him in the head with his fist. As Gorman falls to the ground, the killer walks away, and the woman rounds the corner to catch up with him.

While Gorman first tries to get up, then collapses back onto the sidewalk, dying, the couple casually walk away as if nothing ever happened. The killer reaches for the heavy backpack the woman is carrying and takes if from her – just like a gentleman.

They walk away, leaving their victim to die. Anyone with information in regards to this incident is asked to call the NYPD’s Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).